My standard load for years in my Disc was 100grs of Pyrodex or Goex
and a 300gr Barnes copper bullet....Currently I am sighted in with 90grs
Pyrodex and a TC 250 Shockwaves...grouping about 2-2 1/2 inches at 150...
If you can find last years Shockwaves with the shorter sabots...they might
help..my groups went from 2 1/2 at 100 with the Hornady SSTs to one ragged hole at 100 with the shorter sabots in the TC package...For some reason I can't duplicate with the MMP short black or the Mag sabots...So
I went to Dicks and bought 6 boxes...

Also...for some reason my Knight has never liked 250gr bullets, until I tried the Shockwaves...Just prefers longer bullets....